Stadium: Court 10 Round: 26 Ground: Clay
| Polish National Tour | 2020/07/26 07:00 | Michal Dembek v Maciej Rajski | 2-6,6-3,6-4 |
| Polish National Tour | 2020/07/08 11:00 | Michal Dembek v Maciej Rajski | 2-6,2-6 |
| Marbello Cup Exhibition Series | 2020/06/02 11:15 | Maciej Rajski v Michal Dembek | 6-3,3-6,17-15 |
| ITF M25 Poznan | 2020/08/27 08:55 | Kacper Zuk v Maciej Rajski | 6-2,6-0 |
| ITF M25 Poznan | 2020/08/26 07:55 | Piotr Matuszewski v Maciej Rajski | 3-6,6-7 |
| ITF M25 Poznan | 2020/08/25 08:00 | Maciej Rajski v Dominik Recek | 6-0,6-1 |
| ITF M25 Poznan | 2020/08/24 08:00 | Maciej Rajski v Sandro Szic | 6-2,6-2 |
| Polish National Tour | 2020/08/20 13:20 | Maciej Rajski v Aleksander Orlikowski | 1-6,6-3,6-7 |
| Polish National Tour | 2020/08/20 10:30 | Maciej Rajski v Adam Kwiatkowski | 6-2,6-2 |
| Polish National Tour | 2020/08/18 07:30 | Daniel Michalski v Maciej Rajski | 6-4,6-2 |
| Polish National Tour | 2020/08/16 10:25 | Maciej Rajski v Piotr Pawlak | 6-3,6-4 |
| ITF M15 Bratislava | 2021/03/13 09:30 | Fabian Marozsan v Michal Dembek | 3-6,6-3,6-0 |
| ITF M15 Bratislava | 2021/03/12 09:00 | Michal Dembek v Aleksander Orlikowski | 7-6,2-6,6-3 |
| ITF M15 Bratislava | 2021/03/11 10:50 | Gabriel Petit v Michal Dembek | 3-6,3-6 |
| ITF M15 Bratislava | 2021/03/10 15:00 | Petr Nouza v Michal Dembek | 7-6,6-7,4-6 |
| ITF M15 Bratislava | 2021/03/04 10:15 | Michal Dembek v Jurgen Briand | 3-6,4-6 |
| ITF M15 Bratislava | 2021/03/02 13:00 | Aleksander Orlikowski v Michal Dembek | 6-7,6-1,6-7 |
| ITF M15 Nur-Sultan | 2021/02/14 04:55 | Riccardo Balzerani v Michal Dembek | 3-6,6-7 |
| ITF M15 Nur-Sultan | 2021/02/13 05:00 | Michal Dembek v Francesco Forti | 6-2,6-0 |